Windows Additions: don't load the WDDM driver if 3D support is not available for Windows 8 guests to keep the guest maintainable in that case (still better to miss some features than providing a blank screen)

Solaris Additions: added support for X.org Server 1.11 and 1.12

VirtualBox 4.1.14 (released 2012-04-26)

This is a maintenance release. The following items were fixed and/or added:

Network: fixed the problem with packets larger than MTU-4 when PCnet or PRO/1000 was bridged to certain types of adapters on OS X hosts (bug #3783)

3D Support: Fixed fullscreen mode issues for ATI graphics (bug #9775), Windows Media Player rendering for XPDM-based Direct3D support (bug #8341). Multiple fixes to XPDM and WDDM - based 3D support for Windows Guests and for 3D support in general